I really doubt that Silca had anything to do with my pump. The base is stamped "made in Taiwan", and there's no model number on the pump, nothing stamped into the valve body itself. It's just that Silca is the only mfr. that appears to stock and sell this kind of replacement part for their pumps. I imagine that I need a part that's similar... only totally different. I don't have any clue where I might go to hunt for something that might work. There used to be a 50-year-old LBS nearby that had cabinets full of random junk, but they've been gone awhile now.